On the merit of hot ion mode for tearing mode stabilization

S. Jin, A. H. Reiman, N. J. Fisch

Research output: Contribution to journalArticlepeer-review

Abstract

The stabilization of tearing modes with rf driven current benefits from the cooperative feedback loop between rf power deposition and electron temperature within the island. This effect, termed rf current condensation, can greatly enhance and localize the current driven within magnetic islands. It has previously been shown that the condensation effect opens the possibility of passive stabilization with broad rf profiles, as would be typical of LHCD for steady state operation. Here, we show that this self-healing effect can be dramatically amplified by operation in a hot ion mode, due to the additional electron heat source provided by the hotter ions.

Original languageEnglish (US)
Article number082509
JournalPhysics of Plasmas
Volume28
Issue number8
DOIs
StatePublished - Aug 1 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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